David O'Brien Jr., MD is an Associate Professor and Chief of Physiatry in the Department of Orthopaedics and Physical Medicine at MUSC in Charleston, SC where he also serves as Director of the Interventional Spine and Musculoskeletal Fellowship there. Dr. O'Brien holds 4 Board Certifications in Physiatry, Pain Medicine, Sports Medicine and Electrodiagnostic Medicine. He has given well over a 100 presentations at national and international conferences and has published numerous articles and book chapters on the subject of spine care, medical coding and healthcare policy. He has served as course director and/or instructor for numerous NASS injection courses and conferences. He is the NASS alternate advisor to the AMA-CPT and has worked on numerous CPT and RUC-related projects and proposals, society position statements, local and national coverage determination policies.